title: Microleakage of Diaket and amalgam in root-end cavities prepared using MicroMega sonic retro-prep tips.
abstract: The in vitro sealing ability of the root-canal sealer Diaket when used as a root-end filling material was compared with that of amalgam using linear micro-leakage of Indian ink. Eight groups of 20 extracted teeth each were formed, plus 12 control teeth as follows: 1) root-end resection of 45 degrees bevel, root-end cavity preparation with an 008 round bur, amalgam root-end filling; 2) 45 degrees bevel, bur, Diaket; 3) 45 degrees bevel, using a sonic retro-prep tip, amalgam; 4) 45 degrees bevel, sonic, Diaket; 5) no bevel, bur, amalgam; 6) no bevel, bur, Diaket; 7) no bevel, sonic, amalgam; 8) no bevel, sonic, Diaket. Root-end cavity depths of 3 mm were prepared. Specimens were immersed in Indian ink for 2 weeks. The teeth were demineralized, rendered transparent and linear dye penetration recorded. Results showed that Diaket provided a superior seal to amalgam irrespective of the root-end preparation. The degree of bevel of the resected root-end did not influence leakage. Sonic instrumentation resulted in a larger root-end cavity than with burs.
authors.affiliation: Department of Restorative Sciences, Baylor College of Dentistry, Dallas, Texas 75246-2013, USA.
authors.forename: A
authors.initials: A
authors.lastname: Lloyd
authors.forename: J
authors.initials: J
authors.lastname: Gutmann
authors.forename: P
authors.initials: P
authors.lastname: Dummer
authors.forename: R
authors.initials: R
authors.lastname: Newcombe
mesh_terms: D001047:Apicoectomy; D001729:Bismuth; D003723:Dental Amalgam; D003763:Dental Leakage / Q000517:prevention & control*; D004338:Drug Combinations; D004353:Drug Evaluation, Preclinical; D006801:Humans; D066298:In Vitro Techniques; D011145:Polyvinyls; D011897:Random Allocation; D012387:Root Canal Filling Materials; D018915:Root Canal Preparation / Q000295:instrumentation* / Q000379:methods; D017213:Root Caries / Q000628:therapy*; D013997:Time Factors; D015034:Zinc Oxide
chemical_list: D004338:Drug Combinations; D011145:Polyvinyls; D012387:Root Canal Filling Materials; C014457:bismuth phosphate, copolymers of vinyl acetate, dichlorophen, propionyl-acetophenone, triethanolamine, vinyl chloride, vinylisobutyl ether, zinc oxide drug combination; D003723:Dental Amalgam; D015034:Zinc Oxide; D001729:Bismuth